JPS5538720A - Vtr - Google Patents
VtrInfo
- Publication number
- JPS5538720A JPS5538720A JP11093978A JP11093978A JPS5538720A JP S5538720 A JPS5538720 A JP S5538720A JP 11093978 A JP11093978 A JP 11093978A JP 11093978 A JP11093978 A JP 11093978A JP S5538720 A JPS5538720 A JP S5538720A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- supplied
- gain
- reproduced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To secure a constant level for the color signal without causing the lateral lines by controlling the level of the color signal received the low-range conversion and contained in the reproduced signal in accordance with the amplitude of the luminance signal received the FM modulation and contained in the reproduced signal.
CONSTITUTION: Luminance signal YF which is reproduced through rotary head 1 and drawn out through high pass filter 3 is supplied to gain control circuit 12.And the gain-controlled signal YG is supplied to envelope detection circuit 14 through amplifier 13, and this detection output is supplied to the gain terminal of circuit 12 as control signal SC. Circuit 12, amplifier 13 and circuit 14 form the automatic gain control system of the closed loop. Furthermore, signal SC is supplied to the control terminal of gain control circuit 9 through correlation correction circuit 15. Thus the level of color signal CL can be made even.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11093978A JPS5538720A (en) | 1978-09-08 | 1978-09-08 | Vtr |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11093978A JPS5538720A (en) | 1978-09-08 | 1978-09-08 | Vtr |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5538720A true JPS5538720A (en) | 1980-03-18 |
JPS6115636B2 JPS6115636B2 (en) | 1986-04-25 |
Family
ID=14548398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11093978A Granted JPS5538720A (en) | 1978-09-08 | 1978-09-08 | Vtr |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5538720A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2508841B2 (en) * | 1989-05-22 | 1996-06-19 | 井関農機株式会社 | Riding type seedling planter |
-
1978
- 1978-09-08 JP JP11093978A patent/JPS5538720A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6115636B2 (en) | 1986-04-25 |
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